Spin–orbit alignment for three transiting hot jupiters: WASP-103b, WASP-87b, and WASP-66b
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Addison, B. C.; Tinney, C. G.; Wright, D. J.; Bayliss, D.
Description
We have measured the sky-projected spin–orbit alignments for three transiting hot Jupiters, WASP-103b, WASP-87b, and WASP-66b, using spectroscopic measurements of the Rossiter–McLaughlin effect, with the CYCLOPS2 optical fiber bundle system feeding the UCLES spectrograph on the Anglo-Australian Telescope. The resulting sky-projected spin–orbit angles of λ = 3° ± 33°, λ = −8° ± 11°, and λ = −4° ± 22° for WASP-103b, WASP-87b, and WASP-66b, respectively, suggest that these three planets are likely...[Show more]
dc.contributor.author | Addison, B. C. | |
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dc.contributor.author | Tinney, C. G. | |
dc.contributor.author | Wright, D. J. | |
dc.contributor.author | Bayliss, D. | |
dc.date.accessioned | 2016-08-30T03:58:10Z | |
dc.date.available | 2016-08-30T03:58:10Z | |
dc.identifier.issn | 0004-637X | |
dc.identifier.uri | http://hdl.handle.net/1885/107356 | |
dc.description.abstract | We have measured the sky-projected spin–orbit alignments for three transiting hot Jupiters, WASP-103b, WASP-87b, and WASP-66b, using spectroscopic measurements of the Rossiter–McLaughlin effect, with the CYCLOPS2 optical fiber bundle system feeding the UCLES spectrograph on the Anglo-Australian Telescope. The resulting sky-projected spin–orbit angles of λ = 3° ± 33°, λ = −8° ± 11°, and λ = −4° ± 22° for WASP-103b, WASP-87b, and WASP-66b, respectively, suggest that these three planets are likely on nearly aligned orbits with respect to their host star's spin axis. WASP-103 is a particularly interesting system as its orbital distance is only 20% larger than its host star's Roche radius and the planet likely experiences strong tidal effects. WASP-87 and WASP-66 are hot (T eff = 6450 ± 120 K and T eff = 6600 ± 150 K, respectively) mid-F stars, making them similar to the majority of stars hosting planets on high-obliquity orbits. Moderate spin–orbit misalignments for WASP-103b and WASP-66b are consistent with our data, but polar and retrograde orbits are not favored for these systems. | |
dc.description.sponsorship | The research work presented in the paper at UNSW has been supported by ARC Australian Research Council grants DP0774000, DP130102695, LE0989347, and FS100100046. Work at the Australian National University is supported by ARC Laureate Fellowship Grant FL0992131. | |
dc.publisher | American Astronomical Society | |
dc.rights | © 2016. The American Astronomical Society. http://www.sherpa.ac.uk/romeo/issn/0004-637X/..."Publisher's version/PDF may be used on any website or authors' institutional repository" from SHERPA/RoMEO site (as at 30/08/16). | |
dc.source | The Astrophysical Journal | |
dc.title | Spin–orbit alignment for three transiting hot jupiters: WASP-103b, WASP-87b, and WASP-66b | |
dc.type | Journal article | |
local.identifier.citationvolume | 823 | |
dc.date.issued | 2016 | |
local.publisher.url | https://aas.org/ | |
local.type.status | Published Version | |
local.contributor.affiliation | Bayliss, D., Research School of Astronomy and Astrophysics, The Australian National University | |
dc.relation | http://purl.org/au-research/grants/arc/DP0774000 | |
dc.relation | http://purl.org/au-research/grants/arc/DP130102695 | |
dc.relation | http://purl.org/au-research/grants/arc/LE0989347 | |
dc.relation | http://purl.org/au-research/grants/arc/FS100100046 | |
dc.relation | http://purl.org/au-research/grants/arc/FL0992131 | |
local.identifier.essn | 1538-4357 | |
local.bibliographicCitation.issue | 1 | |
local.bibliographicCitation.startpage | 29 | |
local.identifier.doi | 10.3847/0004-637X/823/1/29 | |
dcterms.accessRights | Open Access | |
Collections | ANU Research Publications |
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